Changed the stored value of speed ratio in the motion pages.

  - the internal action period needs to be transformed from the period in us.
  - removed the call to the action_load_next_step() function when the action finishes by itself.

Added a file wit the motion pages ID's.

removed all dynamixel master and slave modules.
Added a function to get the motion period in us for the motion modules.

  It can be enabled or disabled.
  It simplifies the wait for the termination of the action.

Changed the way to detect which module is addressed by the dynamixel slave interface.

Solved a problem with the RAM window detection.

Added the comm module to handle slave communications.

When the page 0 is loaded, a default value of 32 is loaded to the compliance slope.

Solved a problem with the IMU enable and disable functions.

Solved a syncrhonization problem with the dynamixel master interface.